1355553770849 has 4 divisors (see below), whose sum is σ = 1361473219860. Its totient is φ = 1349634321840.

The previous prime is 1355553770687. The next prime is 1355553770861. The reversal of 1355553770849 is 9480773555531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 723234586624 + 632319184225 = 850432^2 + 795185^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1355553770849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1355553770791 and 1355553770800.

It is not an unprimeable number, because it can be changed into a prime (1355553760849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2959724162 + ... + 2959724619.

It is an arithmetic number, because the mean of its divisors is an integer number (340368304965).

Almost surely, 2^{1355553770849} is an apocalyptic number.

It is an amenable number.

1355553770849 is a deficient number, since it is larger than the sum of its proper divisors (5919449011).

1355553770849 is an equidigital number, since it uses as much as digits as its factorization.

1355553770849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5919449010.

The product of its (nonzero) digits is 79380000, while the sum is 62.

The spelling of 1355553770849 in words is "one trillion, three hundred fifty-five billion, five hundred fifty-three million, seven hundred seventy thousand, eight hundred forty-nine".